Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, chien tranh
thanh tung » thanh cong
hien hanh » dieu hanh
cua khong » hua khong, cua phuong, cua thuong
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien thanh) OR (hien hanh)) - thanh tung ((cua khong) or (cua cong)) cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (hien hanh)) - thanh tung ((cua khong) OR (cua cong)) cong san than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien thanh) OR (hien hanh)) - thanh tung ((cua khong) or (cua cong)) cong san than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) OR (hien hanh)) - thanh tung ((cua khong) or (cua cong)) cong san than cap*.